ARM: defconfig: clean up multi_v4t and multi_v5 configs

Integrator now selects the regulators and versatile selects the
reset driver, so the correspondig options can be dropped from
the defconfig files.

Fixes: d2854bbe ("ARM: integrator: Add some Kconfig selections")
Fixes: 1c6e288d ("ARM: versatile: move restart to the device tree")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>